diff --git a/compact/hcal.xml b/compact/hcal.xml
index 95390bd8ee49a123ba3d576ed3726f1270b5dbe2..590425d8ecf5410677056096868414b36dceecb0 100644
--- a/compact/hcal.xml
+++ b/compact/hcal.xml
@@ -85,11 +85,11 @@
   <readouts>
     <readout name="HcalBarrelHits">
       <segmentation type="CartesianGridXY" grid_size_x="100* mm" grid_size_y="100 * mm"/>
-      <id>system:6,barrel:3,module:4,layer:8,slice:5,x:32:-16,y:-16</id>
+      <id>system:8,barrel:3,module:4,layer:8,slice:5,x:32:-16,y:-16</id>
     </readout>
     <readout name="HcalEndcapHits">
       <segmentation type="CartesianGridXY" grid_size_x="100 * mm" grid_size_y="100 * mm"/>
-      <id>system:6,barrel:3,module:4,layer:8,slice:5,x:32:-16,y:-16</id>
+      <id>system:8,barrel:3,module:4,layer:8,slice:5,x:32:-16,y:-16</id>
     </readout>
   </readouts>